IEEE802.21 and Broadcast Handovers Burak Simsek (Fraunhofer Institute) Jens Johann (Deutsche Telekom AG) Juan Carlos Zúñiga (InterDigital Communications, LLC) Farrokh Khatibi (Qualcomm) Junghoon Jee (ETRI) Byungjun Bae (ETRI) 21-08-0199-03-0000 1 Outline • Introduction • Convergence of Broadcast and Mobile Technologies • Juan Carlos Zúñiga from InterDigital • Motivation for Broadcast Handovers • Burak Simsek from Fraunhofer Institute • Examples of Broadcast Technologies • DVB (Digital Video Broadcasting) • Jens Johann from Deutsche Telekom • MediaFLO • Farrokh Khatibi from Qualcomm • DMB (Digital Multimedia Broadcasting) • Byungjun Bae from ETRI • Next Steps 21-08-0199-03-0000 2 Broadcast World DMB DVB DVB DMB MediaFLO DVB DMB DVB MediaFLO DVB DVB DVB DVB DVB DMB DMB 21-08-0199-03-0000 3 Vision Innovation Speed Performance Convergence of Broadcast and Mobile Technologies Juan Carlos Zúñiga Sr. Staff Engineer InterDigital Communications, LLC [email protected] Mobility Requirements for Convergence VoIP •• SeamlessSeamless mobilitymobility betweenbetween multiplemultiple radioradio Server technologiestechnologies •• IP-basedIP-based protocolsprotocols andand networksnetworks Instant Messaging Gaming Server Server •• SupportSupport forfor evolvingevolving usageusage modelsmodels •• AlwaysAlways connectedconnected toto IMS,IMS, ContentContent andand WebWeb servicesservices •• UpgradeableUpgradeable forfor futurefuture moremore capablecapable devicesdevices •• NoNo useruser interventionintervention requiredrequired TV Broadcast WLAN 802.11 Mobility WiMax 802.16 Converged Device Converged Cellular Device UMTS 5 Hybrid Networks: Broadcast and Mobile • Both networks can benefit from each other • WiMAX, WLAN, 3GPP/3GPP2 network operators can benefit from: – Multicasting with much better quality, to a larger set of customers with one transmitter – Market penetration with little investment • DVB-H supported by the EU commission as the mobile TV standard • € 20B expected revenue in 2011 (2M subscribers in 2006, 6M in 2007) – Use of existing broadcasting brands and new services • Broadcast network operators can benefit from: – Virtual bidirectional channel – AAA support – Enabling more services as a result of interactivity • Customized advertisements, Mobile TV, live polls, purchase banners, interactive games, chat services, webcasting, file transfers, etc. – Specialized services based upon location 6 Converged Devices and Standards • In the following years we see the dominance of more services relying on hybrid networks • Devices capable of DVB-H, WLAN, UMTS are already available • Fixed Mobile Convergence Alliance (FMCA) started interoperability Work Item on IEEE 802.21 MIH in June 2008 • Interactive mobile TV standard for a common user interface with a media independent Java API (JSR 272) is also there • Open Mobile Alliance (OMA) Mobile Broadcast Services Enabler Suite (BCAST) supports DVB-H, 3GPP MBMS, 3GPP2 and mobile unicast streaming systems at the application layer 7 Main Broadcast Services Return / Uplink channel required Mobile TV with Interactive Mobile TV/Radio synchronized, auxiliary File Download data stream mobile TV TV/radio TV with auxiliary Rich media services User triggered transmission data i.e. text or with advanced download of any kind FTA (free-to-air) or data elements for interactivity of content via encrypted interaction A/V stream includes broadcast transmission No additional data Ring Tones synchronization of streams Music H.264 streaming data elements with Synchronization of Maps A/V stream data streams with A/V clips Time shifting A/V stream Games… 8 Mobile TV Services Usage scenarios for Mobile TV with auxiliary data link Voting/Polling Info Push Shopping VoD Voting, polling, Additional Advertised products User can access on quizzes or other information can be directly demand short video games during a TV presented in ticker purchased clips (i.e. roundups, show format Connection to a news, shows) Results fed in real Ticker might contain shop triggered by a time via the interactive elements link interactivity channel e.g. news, shopping Vote for Best Live Act • Madonna – Press [1] • Shaker – Press [2] Order new CD ... 9 Broadcast Service Network Content Content Provider Aggregator Mobile Broadcast Service Provider Service TV Guide File Content Meta Data Content Creation Content Creation Service Management Live Content OMA BCAST DRM Service Application Management Mobile Network Operator Shop Front End Broadcast Broadcast Network Platform Playout Management IEEE IPTV Network Service Management Broadcast Operator 10 Link Layer Handover Needs • Interaction at L2 is missing and needed – IEEE 802.21 is the best candidate to fill in this gap • 802.21 inter-technology handover requirements also applicable to broadcast services – QoS concerns, service availability, price, power consumption, network selection, etc. – Coverage Problem also exists in suburban and intra-urban areas • More converged devices will become available – Automobiles equipped with DVB - UMTS- WIMAX already being tested by some manufacturers 11 IEEE 802.21 MIH Advantages for Mobility • IEEE 802.21 MIH enables seamless handovers across different access technologies • Enhances user experience during handover: – Optimizes Layer 3 handover (e.g. Mobile IP, Proxy Mobile IP, SIP) – Provides QoS continuity across different technologies – Minimizes service interruption • Provides ease of implementation: – Thin software client on terminals – No radio access network modifications required – Addition of a single MIH server in the IP network • Supports either network or client-controlled handovers 12 Motivation for Broadcast Handovers Burak Simsek Fraunhofer Institute 13/60 DVB-H coverage planning Germany (1) Introduction Scenario Berlin Introduction is planned in September 2008 To cover 15 regions of Germany Frankfurt Coverage mode: portable indoor Munich About 20% population coverage (15-16 Mio people) 14/60 DVB-H coverage planning Germany (2) Interim target scenario Berlin Should be realized until 2011 To cover 36 regions of Germany and some smaller Frankfurt areas About 45% population coverage (36 Mio people) Munich A nation wide DVB-H coverage is not planned 15/60 Handover Scenario 1 • Family Jonas has two children. They are traveling from Bonn to Berlin for visiting their grandparents during the Christmas holiday… • Anna is 5 years old and is a fan of “Sesame Street” • Sesame Street is free to air and will be offered via broadcast channel in a few minutes • Their car is equipped with TV sets on the back sides of the front seats, – A unidirectional broadcast receiver – A bidirectional WIMAX/UMTS receiver • Anna turns on the TV and starts watching “Sesame Street” as they are still within the city boundaries of Bonn 16/60 Handover Scenario 1 • Free to Air TV starts using DVB as default • In 15 minutes they are approaching to the borders of the BONN DVB Coverage – There is a cheaper network providing the service for less price – Battery Level does not support the use of multiple interfaces simultaneously, where telephone connection cannot be sacrificed… Aggregators: DirecTV, Premiere, … WIMAX Multicast WIMAX Streaming Service AR Core WIMAX Provider Unicast Network DVB-H Broadcast 17/60 DVB AR Handover Scenario 2 • Family Jonas also has a flat rate video service from their mobile service providers. • The brother of Anna, Michael, is a football fan and do not want to miss European football championship during this long journey – The game between Russia and Spain is starting • Since the video service is a service of mobile service provider, initially service is started over UMTS or WiMAX… 18/60 Handover Scenario 2 • Near Dortmund, service operator becomes aware of the fact that there is a sufficient number of customers watching the games. • Hence, start NIHO, so that the games are multicasted over broadcast channel. • For the next 40km, Michael uses DVB without being aware of it… 19/60 Handover Scenario 3 • Mrs. Jonas is joining to an online interactive lecture periodically which will enable her to promote in her career • Although the lecture is broadcasted, she needs uplink channel for asking questions • MIH User on the car determines that the service is available for free over broadcast, but needs uplink channel for uplink data transfer. By the use of MIIS, MIH user determines the most appropriate uplink channel for the lecture. Service starts… • During their journey, both uplink and downlink channels change for different reasons and MIH user is able to manage both connections simultaneously so that the service is offered in a seamless manner 20/60 Handover Scenario 4 • In 20 minutes, the game between Turkey and Germany starts, which is watched by more than 30 million people simultaneously in Germany, • Bandwidth is required for the game, the lecture of Mrs. Jonas should be transferred to another access technology • Hence Broadcast technology initiates NIHO • Mrs. Jonas starts using WIMAX/UMTS for both downlink and uplink of the lecture 21/60 Summary • Hybrid Broadcast/Mobile Networks technologies have significant financial advantages for all mobile network operators — Initial mobile TV services using hybrid networks in different countries have shown that customer acceptance is very high — We will witness more and more hybrid networks in the following years • Hybrid Networks need even more cooperation among different technologies than vertical handovers do — IEEE 802.21 is a good candidate to provide with